213131331203023 has 4 divisors (see below), whose sum is σ = 215829196155040. Its totient is φ = 210433466251008.

The previous prime is 213131331203009. The next prime is 213131331203033. The reversal of 213131331203023 is 320302133131312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213131331203023 - 2⁹ = 213131331202511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213131331202982 and 213131331203000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213131331203033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348932475890 + ... + 1348932476047.

It is an arithmetic number, because the mean of its divisors is an integer number (53957299038760).

Almost surely, 2^{213131331203023} is an apocalyptic number.

213131331203023 is a deficient number, since it is larger than the sum of its proper divisors (2697864952017).

213131331203023 is an equidigital number, since it uses as much as digits as its factorization.

213131331203023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697864952016.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 213131331203023 its reverse (320302133131312), we get a palindrome (533433464334335).

The spelling of 213131331203023 in words is "two hundred thirteen trillion, one hundred thirty-one billion, three hundred thirty-one million, two hundred three thousand, twenty-three".